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        AAI135-S00 S2

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        The YOKOGAWA AAI135-S00 S2 is an 8-channel, fully isolated analog input module designed to accept standard 4-20mA signals from field transmitters in Yokogawa CENTUM DCS and STARDOM FCS environments.
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
        Shipping Mode
        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for AAI135-S00 S2

        • Manufacturer:
          Yokogawa
        • Part Number:
          AAI135-S00 S2
        • Product Family:
          Centum CS-Centum VP
        • Product Type:
          Analog Input Module
        • Input Signal:
          4 to 20 mA DC
        • Accuracy:
          ±16 µA
        • Input Resistance (Power ON):
          290 Ω (at 20 mA) to 450 Ω (at 4 mA)
        • Input Resistance (Power OFF):
          500 kΩ or higher
        • Allowable Input Current:
          25 mA
        • Data Update Period:
          10 ms
        • Transmitter Power Supply:
          15.0 V min (at 20 mA) to 29.3 V max (at 0 mA)
        • Temperature Drift:
          ±16 µA / 10°C
        • Max. Current Consumption:
          360 mA (5 V DC), 450 mA (24 V DC)
        • Weight:
          0.3 kg
        • Estimated shipping dimensions:
          3.2x 12.7x 12.7 cm
        • Tariff Code:
          8537101190
        • Country of origin:
          Japan
        • Place of shipment:
          Xiamen, Fujian, China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Specifications Operating Environment Environmental Ratings Applications

        Features:

        • Full Channel-to-Channel Isolation for Signal Integrity
        • Built-in Transmitter Power Supply for 2-Wire Devices
        • Support for HART Communication and Redundancy
        The YOKOGAWA AAI135-S00 S2 provides 500V AC isolation between each input channel and between all channels and the system. This eliminates ground loops, rejects common-mode noise, and prevents a fault on one channel from disrupting the rest of the I/O, ensuring reliable readings in electrically noisy industrial environments.

        Each input channel on the YOKOGAWA AAI135-S00 S2 includes a dedicated loop power supply, delivering at least 15.0V at 20 mA. This allows direct connection of 2-wire transmitters without external power bricks, reducing cabinet wiring, panel space, and overall installation costs.

        The YOKOGAWA AAI135-S00 S2 enables simultaneous 4-20mA analog measurement and HART digital communication (when ordered with -H option), allowing access to device diagnostic data and secondary variables. The module can also be deployed in a dual-redundant configuration, automatically switching to a standby module upon failure to maximize process availability.

        The AAI135-S00 S2 YOKOGAWA 8-Channel Isolated 4-20mA Analog Input Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        YOKOGAWA AAI135-S00 S2 8-Channel Isolated 4-20mA Analog Input Module Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        YOKOGAWA AAI135-S00 S2 8-Channel Isolated 4-20mA Analog Input Module

        General

        • Manufacturer YOKOGAWA
        • Model AAI135-S00 S2
        • Condition New Original ready stock
        • Product Family AAI143-H50 S1,AAI143-H53 S1,AAI143-S03 S1
        Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • Temperature Range: Standard version supports 0 to 70°C ambient. With the "-3" suffix option, the module extends operation from -20 to 70°C for extreme environments.
        • Humidity: Suitable for typical indoor industrial environments with non-condensing humidity (5-95% RH per Yokogawa cabinet specifications).
        • Installation: Mounts inside certified Yokogawa node units / cabinets (such as AFV30/40, AFG series) that comply with FIO mechanical and thermal guidelines.
        • Atmospheric Conditions: The optional ISA Standard G3 coating (suffix "3") protects against corrosion in environments with airborne sulfur, chlorine, or other industrial pollutants.
        • Isolation Rating: 500V AC isolation between channels and between channels and the system (1-minute withstand test), ensuring electrical safety and noise rejection.
        • Pollution Degree: Designed for Pollution Degree 2 environments (non-conductive pollution, or temporary conductivity due to condensation) as defined in IEC standards for industrial control equipment.
        • Corrosion Protection: Optional ISA Standard G3 rating (suffix code "3") provides enhanced conformal coating for use in harsh industrial atmospheres with moderate levels of corrosive gases.
        • Temperature and Storage: Extended temperature range option (-20 to 70°C operation) ensures reliable startup and performance in unheated cabinets or outdoor kiosks. Derating may apply for specific node unit configurations at high temperature (e.g., 60-70°C with ER bus nodes).
        • Refining and Petrochemical Plants: Monitoring critical process variables (pressure, temperature, flow) from 4-20mA transmitters in volatile, high-noise environments where channel isolation prevents fault propagation.
        • Power Generation Facilities: Connecting turbine lube oil pressure sensors, boiler drum level transmitters, and condenser water flow meters, benefiting from high accuracy (±16 µA) and redundant configuration support.
        • Pharmaceutical and Biotech Manufacturing: Interfacing with sanitary pressure and temperature transmitters in clean rooms, where reliable HART communication allows access to calibration and diagnostic data without breaking the analog loop.
        • Water and Wastewater Treatment Plants: Reading flow meters, level sensors, and chemical dosing feedback signals over long cable runs, where channel-to-channel isolation eliminates ground loop errors common in distributed outdoor installations.
        Description
        The YOKOGAWA AAI135-S00 S2 provides a high-integrity interface between field instrumentation and your control system. Each of its 8 input channels is electrically isolated from the others and from the system bus, ensuring that noise, ground loops, or faults on one channel do not affect the rest of the installation. This makes the module particularly suitable for critical processes where signal integrity and operational continuity are paramount.

        Engineered for demanding applications, the YOKOGAWA AAI135-S00 S2 directly supports both 2-wire and 4-wire transmitters. It supplies a regulated loop power source (15.0V minimum at 20mA) for 2-wire devices, simplifying field wiring and reducing the need for external power supplies. The module's high accuracy of ±16 µA ensures that process variables such as pressure, temperature, and flow are captured with precision.

        Additionally, the YOKOGAWA AAI135-S00 S2 is designed for redundancy and smart device integration. It can be configured in a dual-redundant pair for high-availability applications. When equipped with HART communication (model suffix -H), it allows simultaneous transmission of the primary 4-20mA process variable and digital HART data, enabling access to additional device diagnostics and secondary variables without interrupting the analog signal.
        Alternative Names
        AAI135SOOS2 AAII35SOOS2 AA1135SOOS2 AAII35S00S2 AA1135-S00S2 AAII35-SOOS2 AA1135-SOOS2 AAI143-H50 S1
        Technical notes
        When deploying the YOKOGAWA AAI135-S00 S2, users should note that it provides channel-to-channel and channel-to-system isolation at 500V AC, eliminating ground loop issues common in multi-point installations. Furthermore, for HART communication functionality, the module must be installed in an ER bus node unit with EB401 firmware revision 2 or later.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        In which control systems can I use the YOKOGAWA AAI135-S00 S2?
        The YOKOGAWA AAI135-S00 S2 is designed for use with Yokogawa CENTUM DCS and STARDOM FCS platforms that support FIO (Field I/O) modules, specifically node units like AFV30, AFV40, AFG series, and AFF50.
        Can the YOKOGAWA AAI135-S00 S2 be used in a safety-related or redundant architecture?
        Yes. The YOKOGAWA AAI135-S00 S2 supports dual-redundant configuration by installing two identical modules in adjacent odd/even slots on the same node unit. If the active module fails, the system automatically switches to the standby module, minimizing process disruption.
        Does the YOKOGAWA AAI135-S00 S2 support HART communication?
        The base model (AAI135-S00 S2) does not include HART. However, the HART-enabled version (model suffix -H, e.g., AAI135-H) supports HART communication. When using HART, the EB401 firmware must be revision 2 or later, and the data refresh cycle time will approximately double compared to non-HART operation.
        What are the benefits of channel isolation for installing the YOKOGAWA AAI135-S00 S2?
        The 500V AC isolation on the YOKOGAWA AAI135-S00 S2 prevents ground loops when multiple transmitters are connected to different power sources. It also ensures that a short or overvoltage on one channel will not damage adjacent channels or the backplane, improving overall system fault tolerance.

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